MCQ
The chirality of the compound


- ✓$R$
- B$S$
- C$Z$
- D$E$


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Select the correct option for $'X'$ and $'Y'$
| List-I | List-II | ||
| A. | Melting point [K] | I. | Tl > In > Ga > Al > B |
| B. | Ionic Radius $\left[ M ^{+3} / pm \right]$ | II. | B > Tl > Al » Ga > In |
| C. | $\Delta_i H _1$$\left[ kJ mol ^{-1}\right]$ | III. | Tl > In > Al > Ga > B |
| D. | Atomic Radius [pm] | IV. | B > Al > Tl > In > Ga |


Statement $(I)$ : In the Lanthanoids, the formation of $\mathrm{Ce}^{+4}$ is favoured by its noble gas configuration.
Statement $(II)$ : $\mathrm{Ce}^{+4}$ is a strong oxidant reverting to the common $+3$ state.
In the light of the above statements, choose the most appropriate answer from the options given below: